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Development Cost
Compare — Cost Breakdown
AI voice agent development cost
"How much does an AI voice agent cost?" has no single number — but it
has clear drivers. Here's an honest breakdown of what moves the price,
what you pay once versus ongoing, and how we scope it.
The Problem
Why there's no single price tag
Anyone quoting a flat number before understanding your calls is
guessing. The cost of a voice agent is driven by a handful of concrete
factors — and they vary a lot between businesses.
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Integration depth is the biggest driver. An agent
that just answers FAQs costs far less than one wired into your
order, booking, and account systems — integration is usually the
largest line item.
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Number of call types. Automating one narrow flow is
cheap; covering many distinct call types multiplies the design and
testing work.
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Languages and audio conditions. Multilingual
support and noisy real-world audio add tuning effort over a single
clean-audio language.
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Inbound vs outbound. Outbound campaigns, reminders,
and follow-ups are additional scope beyond answering inbound.
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Compliance and data handling. Stricter privacy,
residency, or audit requirements add engineering and review time.
What's Included
Build cost vs run cost — what you're paying for
It helps to separate the one-time build from the ongoing run costs.
Both matter, and off-the-shelf tools often hide the second.
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Build (one-time). Scoping and call audit,
conversation and escalation design, integration with your systems,
STT/TTS tuning, testing, and staged rollout.
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Run — telephony. Your telephony/carrier costs for
the calls themselves, billed by your provider.
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Run — speech & model usage. Speech-to-text,
text-to-speech, and LLM usage per call, which scale with volume and
conversation length.
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Run — hosting & monitoring. Infrastructure to
run the pipeline plus observability and evals to keep it reliable.
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Optional — ongoing support. A retainer to tune,
extend scope, and operate the agent, if you'd rather not run it
in-house.
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What you own. With a custom build the stack and IP
are yours — so run costs are real infrastructure, not a per-seat
licence margin.
How We Work
How we scope and quote
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Call audit
We review your real calls to size integration depth, call types,
and languages — the actual cost drivers.
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Scope to an outcome
We define a concrete first release and quote it as a fixed-scope
package, not an open meter.
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Estimate run costs
We give you an honest estimate of ongoing telephony, speech,
model, and hosting costs at your volume.
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Phase the rest
Additional call types and outbound run as milestone-based phases
so spend tracks value.
Fixed-scope packages from $500.
A focused first agent (a few call types, standard integration) sits
at the lower end; broad multi-flow, multilingual, deeply-integrated
builds are quoted higher and phased. Ongoing run costs (telephony,
speech, model, hosting) are estimated separately and honestly. We
quote the build fixed before we start — no open-ended hourly meter.
Proof
Priced against a real production build
Our cost thinking comes from having shipped one: the Battery Smart
voice agent handles inbound driver support against live APIs, in
Hindi, at scale. That experience is what lets us size a quote from
your real calls instead of a guess.
Read the voice agent case study →
FAQ
Voice agent cost — FAQs
So what does it actually cost?
It depends on the drivers above — mainly integration depth, number
of call types, and languages. We give a fixed-scope quote after a
short call audit rather than a flat number that would be meaningless
without knowing your calls.
Is it cheaper than hiring agents?
Over time, often yes — the run costs scale with usage rather than
headcount, and there's no recruitment, training, or attrition. But
the honest answer depends on your volume; we'll model it with you.
What are the ongoing costs?
Telephony, speech-to-text and text-to-speech, LLM usage, and
hosting/monitoring — all of which scale with call volume and length.
We estimate these separately so there are no surprises.
Why do some vendors quote a flat monthly price?
Usually a packaged, per-seat or per-minute product. That's fine for
generic needs, but the meter runs forever and you don't own the
stack. A custom build is a project cost plus real run costs, with
ownership.
How do you keep the build cost predictable?
We scope to a defined first release and quote it fixed before
starting. Extra scope is added as separate, priced phases — so you
never get an open-ended hourly bill.